Under Armour Men's Freedom WWP Amplify Thermal 97% Polyester/3% Elastane Imported This is an Official Wounded Warrior Project licensed product Between August 2012 & December 2016, Under Armour will make a donation of over 5 million to WWP helping veterans & their families not only survive, but thrive in life post-injury Waffle-textured fabric traps warmth without packing on weight 4-way stretch fabrication allows greater mobility in any direction Moisture Transport System wicks sweat & dries fast